Abstract
Vocabulary development is a core element of language acquisition and one of the foundations for the expansion of linguistic skills at all stages of language development. In this study, we examined 316 children aged 2-7 years using vocabulary reception and expression tasks to collect basic data pertaining to vocabulary development from early to late childhood. We used a vocabulary of 100 words in each task, including nouns, verbs, adjectives, and adjectival verbs selected in a preliminary study. The results showed that vocabulary reception and expression increased with age for all parts of speech, suggesting no difference in the acquisition of this vocabulary by region or gender. Further, we observed an increase in the average percentage of correct responses with age for almost all the vocabulary words, all of which showed 75% passing rates. The data obtained in this study could serve as indicators for the early detection of language development delays and as instructional support.
